A man died from an apparent self-inflicted gunshot wound at Arlington National Cemetery on Friday, a spokeswoman said.

The man was found a little after 10 a.m. in section 64 of the military cemetery, said Melissa Bohan of Arlington’s public affairs office. Officials did not immediately release his identity.

The man was found near a tree in the section of the cemetery near the Columbarium Courts, an above-ground area for urns. The section is home to the Pentagon Memorial, a marker for those who died in the Pentagon or on American Airlines Flight 77 in the Sept. 11 attacks.

Bohan said as far as she knows, there were no witnesses.

The Army Criminal Investigation Command is handling the investigation, its spokesman Chris Grey said. He said the man was not an active duty military personnel.